public Socket Accept()
{
if (_isClosed) {
throw new ObjectDisposedException("Socket has been closed");
}
if (_fd < 0) {
// Invalid file descriptor
throw new ZeroTier.Sockets.SocketException((int)Constants.ERR_SOCKET);
}
if (_isListening == false) {
throw new InvalidOperationException("Socket is not in a listening state. Call Listen() first");
}
// TODO: Rewrite -- Check for memory leaks
// Inform zts_accept of the size of the available address buffer
int addrlen = Marshal.SizeOf(typeof(zts_sockaddr_in));
IntPtr addrlenPtr = GCHandle.Alloc(addrlen, GCHandleType.Pinned).AddrOfPinnedObject();
// Allocate space for address buffer and provide pointer to zts_accept
zts_sockaddr_in in4 = new zts_sockaddr_in();
IntPtr remoteAddrPtr = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(zts_sockaddr_in)));
Marshal.StructureToPtr(in4, remoteAddrPtr, false);
int err = zts_accept(_fd, remoteAddrPtr, addrlenPtr);
if (err < 0) {
throw new ZeroTier.Sockets.SocketException(err, ZeroTier.Core.Node.ErrNo);
}
in4 = (zts_sockaddr_in)Marshal.PtrToStructure(remoteAddrPtr, typeof(zts_sockaddr_in));
// Convert sockaddr contents to IPEndPoint
IPAddress ipAddress = new IPAddress(in4.sin_addr);
IPEndPoint clientEndPoint = new IPEndPoint(ipAddress, IPAddress.NetworkToHostOrder(((ushort)in4.sin_port));
// Create new socket by providing file descriptor returned from zts_accept call.
Socket clientSocket = new Socket(
err, _socketFamily, _socketType, _socketProtocol, _localEndPoint, clientEndPoint);
Marshal.FreeHGlobal(remoteAddrPtr);
return clientSocket;
}
public void Connect(IPEndPoint remoteEndPoint)
{
if (_isClosed) {
throw new ObjectDisposedException("Socket has been closed");
}
if (_fd < 0) {
// Invalid file descriptor
throw new ZeroTier.Sockets.SocketException((int)Constants.ERR_SOCKET);
}
if (remoteEndPoint == null) {
throw new ArgumentNullException("remoteEndPoint");
}
int err = Constants.ERR_OK;
int addrlen = 0;
IntPtr remoteAddrPtr = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(zts_sockaddr)));
if (remoteEndPoint.AddressFamily == AddressFamily.InterNetwork)
{
zts_sockaddr_in sa = new zts_sockaddr_in();
addrlen = Marshal.SizeOf(typeof(zts_sockaddr_in));
switch (remoteEndPoint.AddressFamily)
{
case AddressFamily.InterNetwork:
sa.sin_family = (byte)Constants.AF_INET;
break;
case AddressFamily.InterNetworkV6:
sa.sin_family = (byte)Constants.AF_INET6;
break;
case AddressFamily.Unknown:
sa.sin_family = (byte)Constants.AF_UNSPEC;
break;
}
sa.sin_port = (short)IPAddress.HostToNetworkOrder((ushort)remoteEndPoint.Port);
sa.sin_addr = remoteEndPoint.Address.GetAddressBytes();
sa.sin_len = (byte)addrlen; // lwIP-specific
Marshal.StructureToPtr(sa, remoteAddrPtr, false);
//zts_sockaddr sAddr = (zts_sockaddr)Marshal.PtrToStructure(remoteAddrPtr, typeof(zts_sockaddr));
err = zts_connect(_fd, remoteAddrPtr, (byte)addrlen);
}
if (remoteEndPoint.AddressFamily == AddressFamily.InterNetworkV6)
{
/*
socketAddress.iSockaddrLength = Marshal.SizeOf(typeof(sockaddr_in6));
socketAddress.lpSockAddr = CriticalAllocHandle.FromSize(socketAddress.iSockaddrLength);
sockaddr_in6 sa = new sockaddr_in6();
sa.sin6_family = (short)AddressFamily.InterNetworkV6;
sa.sin6_port = (ushort)endpoint.Port;
sa.sin6_addr = endpoint.Address.GetAddressBytes();
sa.sin6_scope_id = (uint)endpoint.Address.ScopeId;
Marshal.StructureToPtr(sa, (IntPtr)socketAddress.lpSockAddr, false);
*/
}
if (err < 0) {
throw new ZeroTier.Sockets.SocketException(err, ZeroTier.Core.Node.ErrNo);
}
Marshal.FreeHGlobal(remoteAddrPtr);
_remoteEndPoint = remoteEndPoint;
_isConnected = true;
}
public void Bind(IPEndPoint localEndPoint)
{
if (_isClosed)
{
throw new ObjectDisposedException("Socket has been closed");
}
if (_fd < 0)
{
// Invalid file descriptor
throw new ZeroTier.SocketException((int)Constants.ERR_SOCKET);
}
if (localEndPoint == null)
{
throw new ArgumentNullException("localEndPoint");
}
int err = Constants.ERR_OK;
int addrlen = 0;
if (localEndPoint.AddressFamily == AddressFamily.InterNetwork)
{
zts_sockaddr_in sa = new zts_sockaddr_in();
addrlen = Marshal.SizeOf(typeof(zts_sockaddr_in));
switch (localEndPoint.AddressFamily)
{
case AddressFamily.InterNetwork:
sa.sin_family = (byte)Constants.AF_INET;
break;
case AddressFamily.InterNetworkV6:
sa.sin_family = (byte)Constants.AF_INET6;
break;
case AddressFamily.Unknown:
sa.sin_family = (byte)Constants.AF_UNSPEC;
break;
}
sa.sin_port = (short)zts_htons((ushort)localEndPoint.Port);
sa.sin_addr = localEndPoint.Address.GetAddressBytes();
sa.sin_len = (byte)addrlen; // lwIP-specific
IntPtr ptr1 = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(zts_sockaddr)));
Marshal.StructureToPtr(sa, ptr1, false);
err = zts_bind(_fd, ptr1, (byte)addrlen);
}
if (localEndPoint.AddressFamily == AddressFamily.InterNetworkV6)
{
/*
* socketAddress.iSockaddrLength = Marshal.SizeOf(typeof(sockaddr_in6));
* socketAddress.lpSockAddr = CriticalAllocHandle.FromSize(socketAddress.iSockaddrLength);
* sockaddr_in6 sa = new sockaddr_in6();
* sa.sin6_family = (short)AddressFamily.InterNetworkV6;
* sa.sin6_port = (ushort)endpoint.Port;
* sa.sin6_addr = endpoint.Address.GetAddressBytes();
* sa.sin6_scope_id = (uint)endpoint.Address.ScopeId;
* Marshal.StructureToPtr(sa, (IntPtr)socketAddress.lpSockAddr, false);
*/
}
if (err < 0)
{
throw new ZeroTier.SocketException((int)err);
}
_localEndPoint = localEndPoint;
}